In the last chapter of the Refrain Blue series, the bond between Yoshihiro Matsunaga and Nao Morisawa grows stronger, while Yoshihiro finally finds out the identify of the mysterious girl from the first chapter.

• PinkPineapple
• Katsuyuki Konishi
• Yumi Kikuchi
• Mie Sonozaki
• Ruri Asano
• Ai Uchikawa
• Shizuka Ishikawa
• Mari Adachi